Electric rocking cradle



Nov. 11, 1952 A. CHISHOLM ELECTRIC ROCKING CRADLE Filed Sept. 7, 1951 2 SHEETS SHEET 1 5 5 Fig-l 4+; -kr 28 3+ 5 0 3 52 58 WW C f l L,-.,|,, E 22'; L g7 Laurence A. Chisholm IN V EN TOR.

Filed Sept. 7, 1951 z'snEaTs-smzw 2 Q N f m o W fi f v w- 9 R P :j 3 g &

Q n 'E N g 1952 L. A. CHlSHOLM 2,617,122

ELECTRIC ROCKING CRADLE Laurence A. G/uIs/w/m INVENTOR.

Patented Nov. 11, 1952 Bani-once. A. Gliislio'lim CutB anlr', iter... assigned of? any per cent to Harold. E2. Hai'uCht; Bank;

Mont.

Application. September 7, 1951,. sedative. 245,474;

aoiaime (01. 59-109) I invention relates to an electric rocking cradle andiparticuiarly to: a". cradle suspended between ends of. arrame and periodically osciliated'. by an electric motor;

From time immemorial' it has been found that the rocking movement of a cradle produces a soothing. and quieting action on infants. It has longbeen customary to rock cradles. by hand onby' othermanuallyoperated' means.v A great deaf or time has: been spent in rocking cradles when the time and attention of the rocker is badly needed elsewhere. Also it? has been found that if acr'adle is left: unattended the infant has a'tendency to climb on the side of the cradle and. frequently causes" upset onf'alls; outv oi. the cradle. v

The cradle of this invention is provided with an electric motor which periodically oscillates the cradle so that the infant is soothed and rocked to sleep without. the ir'n'medi'ate attention of the attendant. Also a. safety connection is provided so that the cradle cannot be-accidentally' up-- set by the infant moving: to or on the side of the cradle. v

Accordingly an object of this invention is to provide an improved locking cradle.

It is? a. further object of'this invention to pro vide a cradle having a non-upsetting feature.

It is a further object of this invention to provide a suspended cradle periodically oscillated by a rocking arm.

It is a further object of this invention to provide a driving oscillating arm so connected that the cradle may not have excessive movement.

Other objects and many of the attendant advantages of this invention will be apparent from the following description taken in conjunction with the accompanying drawing in which:

Figure 1 is a front elevation of the cradle with parts broken away to show the construction;

Figure 2 is a top plan view with parts broken away to show the mounting of the motor drive unit;

Figure 3 is a cross section through the cradle taken substantially on the plane indicated by line 33 of Figure 2;

Figure 4 is a cross section taken substantially on the plane indicated by line 4--4 of Figure 2;

Figure 5 is an enlarged sectional detail of the supporting pins taken substantially on the plane indicated by the line 5-5 of Figure 1; and

Figure 6 is an enlarged perspective view of one of the mounting brackets for the rocking rod.

Ln the: exemplary embodiment; of; the inven tion: according to. thez flgu'res thecradle indicated generally at. 10 is: provided with a. frame hay-= ing ends. l2" and t4 and; longitudinal spacing; members it. and. [8- The end. members t2. and. M are. upstanding, panel members. and. preferably are. provided. with; substantially solid panel meme hers to protect. the.- working. mechanism. of. the.

cradle. A. cradle. 2G is. of" somewhat 16855181131512 than the frame and is mounted between. the? ends}- lj2 and" |4.w The upper; inside. cornersoiitheand members i2 and I4 are provided. with anchor" connected. together by supporting straps 2-8 which rigidly support; the. cradle body 20 for relatively oscillating motion between the ends; [2; andi4l. The ends 3|?- and; 32: of, the cradlebody' 20 are preferably constructed as su-bstan' tially solid panels so. that an. or other; persongmay not stick any portion of their an:

atomy through the endportion into. contact-with the driving mechanism of" the cradle. However. the side members of the cradle body are preferably constructed of perforated or slat construction so that the position of an infant in the cragdle may be readily determined'without immediate attention at the side of the cradle.

Oscillating mechanism for the cradle comprises a pair of pins 40 and 42 rigidly secured on the end members of the frame below the cradle body and extending inwardly a substantial distance from the ends of the frame body. A hollow rocking bar 44 is journaled on the pins 40 and 42 for oscillation thereabout. The rocking bar 44 is provided with rigidly attached rocking arms 46 and 48 extending upwardly into the space between the end of the frame and the end of the cradle body. Each end of the cradle body is provided with a pin 50, 52 rigidly attached thereto and the arms 46 and 48 have longitudinally extending slots engaging the pins 50 and 52 so that oscillation of the arm 44 causes the arms 46 and 48 to slide along the pins 50 and 52 and then oscillate the cradle body about the pins 22. Slots in the arms 46 and 48 are closed at the top to provide an additional safety structure for the cradle, the closed slots limit the motion of the pins 50 and 52 so that any excessive motion of the cradle body is definitely 62 which is rigidly secured on the spacers IG' and I8 of the framework. The motor 60 supplies power to a train of reducing gears herein indicated as belt driven pulleys with small pulleys constantly driving larger pulleys until a terminal pulley drives a crank plate 66 having a pin 88 rigidly mounted adjacent the edge thereof. Rigidly mounted on the rocker bar 44 is an upstanding arm 10 having a slot 12 engaging the pin 68 so that rotation of the plate 66 causes the pin to move up and down in the slot 12 and thus oscillate the bar 44 about the pivots 40 and 42.

In the utilization of the cradle according to this invention the electric motor drives the crank plate 66 through the reducing speed train and the crank plate 66 by its pin 68 oscillates the arm 12" and the attached rocking bar 44 which in turn moves the rocking arms 46 and 4B in a slow oscillato'ry motion. The arms 46 and 48 because of their connections with the pins 50 and 52 cause the'cradle to follow the motion of the arms 46 and 48' in a gentle-oscillatory motion.

1 The connection of the pins 50 and 52 with the closed slots in the arms 46 and 48 prevents any excessive motion of the cradle body so that the infant is not aptto fall from or bethrown from the cradle. 4

- For purposes of exemplification a specific embodiment of this invention has been shown-and described according to the best present understanding thereof. It will be obvious, to those skilled in the art, thatmany changes and modifications can be made therein without departing from the true spirit of the invention.

Having described the invention, wh as new is: V

1. An electric rocking cradle comprising a cradle frame including panel end members, a cradle body suspended in the frame between said end members, anchor pins attached to the inside upper corners of said frame, anchor pins attached to the lower outside corners of the cradle body,

t is claimed 2,617,122 if Q I j pin secured to each end member of the frame below the cradle body, a hollow rocking bar journaled on said pivot pins, rocking arms rigidly mounted on said rocking bar adjacent each end thereof and extending upwardly between the end members and the ends of the cradle body, pin members secured to the ends of the cradle, said arms having longitudinal apertures, said aperture's engaging said pin r'r'i'embers, an electric motor mounted on said frame, said electric motor being operatively connected to said rocking bar for periodically oscillating said rocking bar. 2. An electric rocking cradle comprising a cradle frame including substantially solid end members, a cradle body suspended between said end members, anchor pins attached to the inside upper corners of said frame, anchor pins attached to the lower outside corners of the cradle suspension members extending between the res'pective anchor pins, inwardly extending pivot body, suspension members extending between the respective anchor pins, inwardly extending pivot pins secured to the end members of the frame below the cradle body, a hollow, rocking bar journaled on said pins, rocking arms rigidly mounted on said rocking bar and extending upwardly between the end member of the frame'and the adjacent ends of the cradle, pin members secured to the ends. of the cradle, said arms having longi: tudinal apertures, said apertures engaging said pin members, an electric motor mounted on said frame under the cradle, a speed reducing system driven by said motor, a crank member driven by said motor through said speed reducing system, a crank pin mounted on said crank member, a driving arm rigidly mounted on said rocking bar, said driving arm having a slot engaging said crank pin whereby said 'motor periodically rocks said cradle.

' LAURENCE A. CHISHOLM.

REFERENCES CITED" The following, references are of record inthe file of this patent:.

UNITED STATES PATENTS 2,557,907; Cranfill June '19, 1951 

